Silencing-muffler.



' L. v. HARDY.

SILENCING MUFFLER.

APPLICATION FlLED MAR.23

Patente Jan. 18, 1916.

gn uen tot, V50/"dy 'LYLE V. HARDY, OF LOWITILLE, NEW .YORK.

SILENGING-MUFFLER-.

Specication of Letters Patent.

Patented Jan. 18, 1916.

Application led March 23, 1915. Serial No. 16,359.

T0 all floh-0m it may con-cern:

Be it known that I, LYLE V. HARDY, a citizen of the United States, residing at Lowville, in the county of Lewis and State of New lYork, have invented certain new and useful Improvements in Silencing-Muilers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same, reference being had to the ac.

companying drawings, and to the letters and figures of reference marked thereon, form a. part of this specification.

This invention relates to new anduseful improvements in mufilers for engines and consists in the provision of a silencer4 of this nature 4whereby the possibility of back pressure and after firing are eliminated and by which an'economy in fuel is afforded.

My invention consists essentially in the provision of a muffler having a series of conical-shaped'members, the open apex end of each extending centrally through an opening in the base of the next adjoining member and forming a continuous passageway through the series of reversely arranged megaphones.

My invention consists of various other details of construction, combinations and arrangements of parts which will be hereinafter fullv described, shown in the accompanying drawings and then specicallv defined in the appended claims.

I illustrate my invention in the accompanying drawings, in which:

Figure 1 is a central longitudinal sectional view through the muffler. Fig. 2 is a sectional view on line 2-2vof Fig. 1. Fig. 3 is asectional view on line 3-3 of Fig. 1.

Reference now being had to the details of the drawings by letter, A designates a cylindrical muflier having an end B with a central opening C, the marginal edge of said end being bent over the flanged end of the muffler andsecurely fastened thereto. Within the shell of the muffler is a series of conical-shaped members, each designated by let` ter D, each havin-g an open apex E extending through an aperture vF in the bo-ttom I-I of the member, the series being held in place by means of the pipe I which passes through registering apertures in the bottom K of the outermost of the several conical-shaped members and also through an apertured disk M. Lock nuts N and L are mounted upon which the exhaust pipe I, one upon either side of the bottom K, and similar nuts O and Q are mounted upon the pipe, one upon either side of the disk or end M. A flanged collar R is bolted or otherwise secured within the shell of the muiler and Iits angled portion, desig-l nated by letter R', is adapted to bear against the outer face of thedisk or end M', thus forming a secure means for holding the va'- rious conical-shaped members in place with the pipe I in alinem'ent with the several apertures through the apex ofeachmember. By the provision of a silencing muiier made in accordance with my invention on the principle of a series of reversed megaphones, I have found thatV after firing is avoided, a great saving of fuel effected and dispensing vwith the noise usually accompanying the opening of the cut out in climbing hills and, owing to the direct passage of the gas, its course is prevented from spreading and which tends to decrease the velocity of the gas, whereas, in the operation of mufflers in which the reverse arrangement of megaphone-shaped members is employed, the gases are allowed to spread and necessarily retard their exit.

. What I claim to be new is j Al. A silencing muler comprising a shell having a series of conical-shaped members mounted therein, each having an apex opening and a central aperture in its closed bottom, the open apex end of each member extending through an aperture in the bottom of an adjacent member, an exhaust pipe fas- I tened in an aperture in the bottom of the end of the series of members and in alinement with the openings through thel apices of said members. f-

2. A silencing muiier comprising a shell having a series of conical-shaped members `mounted therein, each having an apex opening and a central aperture in its closed bottom, the open apex end of each member extending through an aperture in the bottom of an adjacent member, an apertured disk within the muffler, an exhaust pipe passing through .the aperture of said disk and an 'opening 1n the bottom of the adjacent conical-shaped member, and means for fastening the pipe to said disk and apertured bottom.

3. A silencing muffler comprising a shell having a series of conical-shaped members mounted therein, each having an apex opening and a central aperture in its closed bottom, the open apex end of each member ex- .j

tending through an aperture in the bottom of an adjacent member, an apertureddisk within the muler, a circumferentially threaded exhaust pipe passing through the aperture of said disk and an opening in the bottom of the adjacent conical-shaped member, locknuts mounted upon the pipe and engaging the apertured disk and bottom of the adjacent member, and means for holding the disk Within the shell.

4. A silencing muilier comprising a shell having a series of conical-shaped members mounted therein, each having an apex opening and a central aperture in its closed bottom, the open apex end of each member 'eX- tending through an aperture in the bottom of an adjacent member, an apertured disk Within the muile'r, a circumferentially apertured pipe passing through the aperture of said disk and an opening in the bottom of the adjacent conical-shaped member, lock nuts.

mounted upon the pipe and engaging the apertured disk and bottom of the adjacent member, and a collar fitted Within the shell and holding the disk in place Icent member,

5. A silencin muilier comprising a shell having a centra ly apertured end, a series of conical-shaped members, -eaeh having an open apex extending through the bottom of a central aperture in the bottom of an adj athe apex of the end member of the series extending through the aperture in the end of the shell and the marginal edges of the members frictionally engaging the inner surface of the shell, an apertured disk Within the shell in registration with the openings in the bottoms of the members, a threaded pipe passing through said disk and the aperture in the bottom of the adjacent member, lock nuts mounted upon the pipe and engaging said disk and bottom of the adjacent member, and a Banged collarfastened Within the shell and bearing against said disk.

In testimony whereof I hereunto affix my signature in presence of two Witnesses.

LYLE V. HAltDY. Witnesses:

JOHN A. MITCHELL, CHAs. MULLIN. 

